If you’re new to long exposure photography and want to learn more, the below tutorial from photographer Serge Ramelli is a great place to start. In the 12:30-minute video, the Paris-based Ramelli offers an extremely helpful introduction to long exposure photography and the use of photo filters (ND filters, in particular) for long expo newbies and those photographers who just need a refresher course.

“If you want to make water silky, this will show you how,” Ramelli says. "I first use an ND 1000 filter, which takes ten stop out (F-Stops). I put it down to half a second and even a whole second exposure time. Adding long exposure is a really nice way to add that extra aesthetic to a photo. Then I show you how to retouch them in Lightroom.”